Doug,
This is not the first time Vector has missed an area (it's a very big planet), and they've been good about adding them once it is brought to their attention. However, if a separate payware package, such as FSAddons Tongass Fjords region, is required to "complete" FTX-Vector in this location, then it would most certainly be a Vector issue! I just assumed this was an oversight, because if Vector chose not to cover all the places for which other payware exists, there would be quiet a large number of "holes" all over the planet!
Best,
Carlyle